Vernam Cipher, known as One Time Pad, was proved to be unbreakable; however, the keystream digits have to be completely random. Stream Ciphers address the issues by forgoing a degree of security by using a pseudorandom number generator, yet a knownplaintext attack is still a challenge when the key is used more than once due to a weak classical combiner XOR. With this, the study improved the algorithm using multilevel encryption techniques. The proposed algorithm evaluated with the use of Strict Avalanche Effect Criterion with average results of 81.48%. Moreover, the combined results of the Randomness Test having the P-Value between 0-1 (Table 4) indicates that the proposed method showed better results over the original Vernam Cipher algorithm.